teichmann



(No Model.) a Sheets-Sheet? K. TEIOHMANN.

GAS ENGINE.

No. 269,163. Patented Dec. 12, 1882.

N. PEKEIN. MUMM- Wan. RC.

(No Model.) 3 Sheets-Shet 3. K. TEICHMANN.

GAS ENGINE. -'.l. I0.269,163. T Patented De0.'12,1882.

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Application filedAngust 14, 1882. (No model.) Patented in England April28, 1882, No. 2,008; in France April 28, 1882, o. 148,644;

iiNiTEn STATES PATENT Frie KARL TEIOHMANN, OF STUTTGART, WURTEMBERG,GERMANY.

GAS-ENGINE.

SPECIFICATION forming part of Lett ers Patent No. 269,163, datedDecember 12, 1882,

in Belgium April 28, 1882, No. 57,745; in Italy April 28, 1882, XVI,14,148 and XXVIII, 168; in Luxemburg May 1, 1882, No. 198.

and in AustiiaHungary July 7, 1882, No. 1,200 and No. 1,202.!

igniting the mixture, as more fully described hereinafter. y

In the accompanying drawings, Figure 1, Sheet 1, is a vertical sectionof a caloric or gas engine constructed in accordance with my invention;Fig. 2, a sectional plan of the same on the line 1 2, Fig. 1;- Figs. 3,4, 5, 6, and 7,

Sheet 2, diagrams illustrating different modifications in the generalarrangement of the main parts of the engine; Fig.8, Sheet 3, a face viewof the seat for the slide-valve, showing the air, gas, and water ports;Fig. 9, a

transverse section of the slide-valve, seat, and

ports; Fig. 10, a view of the face of the slidevalve; Figs. 11 and 12,views showing the slidevalve in its two extreme positions; Figs.13,14,and 15, sectional views of different forms of gas-ignitingdevices, and Figs. 16 and 17 views of the cut-off valve for thegas-supply.

The principal parts of the engine are thegas and air mixing chamber B, apumping or compression cylinder, A, and its piston, and alargerexpansion or working cylinder, G, and its piston, and the cran k-shaft,rods, and valve-gear.

- In Figs. 1 and 2 I haveshown the compression and expansion cylindersas arranged side by side, and the mixin g-chamber immediately underneaththe compression cylinder, and the crankshaft and connecting rods abovethe cylinders; but it will be understood that the relative arrangementsof the several parts may be modified as found convenient withoutdeparting from my invention. For instance, in Figs. 3, 4, 5, 6, and 7 Ihave shown diagrams sion-cylinder A.

the-mixing-chamber B through a conduit, B,

. containing the device forigniting the combustible mixture of air andgas entering said conduit from the chamber 13 through the outletportb,'controlled by the slide-valve D,Fig. l, Whichalsocontrols theair-inlet passage a, gasinlet passage d, Fig. 2 and port 0, forming thecommunication between these ports and the interior of the mixing-chamberand the compres- The construction of the slide-valve D and thearrangement of the ports are illustrated more fully in Figs. 8 to 12,inciusive,in which it will be seen that a cavity, 1), in the face of thevalve, when the latter is in the position Fig. 12, forms a communicationbetween the air-inlet a and passage 0 to the compressionchamber, and atthe same time the passage 0, Fig. 10, in the valve is brought oppositethe gas-inlet d, so that the gas will enter a chamber, f, in the rear ofthe piston, and thence pass through perforationsto the cavity b to bedrawn with the incoming airiuto the cylinder 0 on the rise of the'pistonin the latter. Unlike the -slidevalves of most gas-engines, the valve Dhas only one bearing-face, instead of moving between two bearing-plates,the valve being maintained in position by the pressure of gas in thechamber 13. When the valve 1) has been moved to the position Fig. 11 theair and gas pass from the cylinder'Ainto the chamber B, which, on therising of the valve D to the position shown in Fig. 12, can pass outthrough the outlet-port I) and pipe B to the interior of theexpansion-cylinder C.

1n the tube B is the device F for igniting the explosive mixture of airand gas; The preturned on its pivot by the arm S, connected to ciseconstruction of this igniting device may be Varied. In Fig. 13, forinstance, I have shown a U-shaped pipe, g, the bend of which is heatedred-hot by a gas-jet, 9, within the tube. In Fig. 14 I have shown astraight pipe, g, heated by a gas-jet, g, and having a small tube, 71,passing through it, while in Fig. 15 I have shown an igniter like thatshown in Fig. 14, except that a diaphragm, i, is substituted for thetube h.

any convenient manner.

The inlet-pipe M, Fig. 2, for the supply of gas, is provided with twovalves, both controlled by a centrifugal governoron the shaft v K-onevalve, n, for regulating the supply of gas, and the other, q, forcutting off the gas entirely. The "alve n is a disk-valve, Figs. 16 and17, carried by a rotary shaft, m, mounted in hearings in the frame, andcarrying at its opposite end a horizontal arm, Z, with a counter-weight,which causes the vertical arm lon the said shaft to press on the end ofthe movable rod or axis K in the direction of the arrow, Fig. 2, againstthe centrifugal action of the governor-balls K, when the shaft is drivenfrom some moving part of the engine, as will be readily understood.Hence when there is too great an increase in the speed the governor-rodK will turn the shaft m against the action of the counter-weight, andtend to close the disk-valve n. This disk is not set up close to itsseat, however, so that a little gas will pass through at all times,sufficient to make the mixture inflammable, no matter what may be theposition of the valve n.

To insure the automatic cut-0E of the entire supply of gas, I employ asecond valve, g, which is controlled by the connecting'rod r, bell-cranklever p rod 19, and rock-shaft carrying the arm 1). the governor-rod K,Fig. 2, so that when the engine is moving at too high a speed the saidcam 0 will comeinto contact with an arm, p, and through the rods andlevers described close the valve q, while when the engine has sloweddown again the cam 0 will move back, and, actin g on a second arm on therock-shaft carrying the arm 19, open the valve q again.

In order to prevent the too great coolin g of the igniting-pipe F whenthe gas-supply is cut off and the engine is running with air only, I

. provide the pipe F with a shield, 8, (shown in difl'erent forms inFigs. 13 and 14,) which is A cam, 0, is arranged on the rod 1'', Fig. 2,to protect the hottest part of the pipe F from the cold air. Theair andgas entering through the separate portsare more or less mixed in passingthrough the valve D and passage 0 and cylinder A; but to insure theirmore thorough mixture I arrange in the chamber B a bent perforatedplate, G, which is adjustable horizontally by suitable means (not shown)to vary the spacet between the plate G and the valve D, and that abetween ber'B, Figs. 1 and 2. The perforations may also be provided withdevices for closing them.

In orderto keep the compression-cylinder and mixing-chamhercool, Iarrange a waterjacket around both and a water-space between the two, asshown in Fig. 1, and in the seat for the slide-valve D, I arrange twowater-ports, y, Fig. 8, which communicate with grooves 00 in the face ofthe slide-valve, Fig. 10, and a water-space, '0, Fig. 9, in the body ofthe valve, so as to allow of a circulation of water through the latterto keep it cool at all times, in no matter what position the valve maybe.

When the engine is in operation it will be seen that the two pistons Aand 0 both move in the same direction at the same time, and I when thetwo pistons are rising the valve D is in such a position, Fig. 12, as toallow the mixture of air and gas to be drawn into the cylinder. Theslide then begins to descend just before the piston A, so as to closethe port 0, Fig. 9, and allow the piston A to compress the air and gas,which, on the further descent of the slide D to open the port 0, Fig.11, pass into the chamber B, and thence on the next rising movement ofthe valve D, Fig. 12, and of the piston C, the gaseous mixture is drawninto the cylinder 0, being ignited by the redhot pipe 9 on its passagethrough the tube B. The valve E is opened just before the piston 0begins its descent, so as to allow of the escape of the products ofcombustion.

I claim as my invention- 1. A gas-engine having a compression-cylinder,an expansion-cylinder, an intermediate mixing-chamber, and a pipeforming acommunication between themixing-chamber and expansion-cylinder,and provided with an igniting device, all substantially as set forth.

2. In a gas-engine, the combination of ajacketed compression-cylinderand a mixing-chamber with an intervening water-space between the two.

3. The combination of the expansion-cylinder and the mixing-chamber of agas-engine with a tube or conduit, B, forming the communication betweenthe two, and a pipe or pipes, g, heated internally within said tube B,substantially as described.

4. A gas-engine having a mixing-chamber containing a perforateddistributing-plate, Gr.

5. The combination of the gas-supply pipe of a gas-engine with twovalves, n and q, both the edge of the plate and the wall of thechamcontrolled bya governor-one to regulate the communicating at alltimes with the space in o supply of gas and the othei to cut it off.

6. The combination of agas-engiue with an igniting device consisting ofa pipe or pipes heated internally, with an adjustable shield, 8,controlled by the valve-gear, substantially as and for the purpose setforth.

7. The combination of a slide-Valve having a watenspace, 2:,with avalve-seat having spaces the valve, substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence 'of two suhscribing witnesses.

' KARL TEIGEIMANN.

Witnesses E. KRUG, Professor. 0. SCHMIDT, Professor.

